I am using jquery filedrop and I was getting an error using readAsBinaryString on Internet Explorer (10+). It works on Chrome and Firefox.
Then I changed that method to readAsDataURL, which 'works' in every browser.
The problem is that this last method returns an base64 file from HttpPostedFileBaseand I don't know how to save the file as it is.
Thats my code now:
byte[] binaryData;
binaryData = new Byte[file.InputStream.Length];
long bytesRead = file.InputStream.Read(binaryData, 0, (int)file.InputStream.Length);
file.InputStream.Close();
string base64String = System.Convert.ToBase64String(binaryData, 0, binaryData.Length);
byte[] bytes = System.Convert.FromBase64String(base64String);
string filePath = Path.Combine(ed_fisico_provisorio.vr_parametro, no_arquivo_provisorio);
System.IO.FileStream fs = System.IO.File.Create(filePath);
fs.Write(bytes, 0, bytes.Length);
fs.Close();
But saving like this, the content of the file becomes like
data:application/msword;base64,0M8R4KGxGuEAAAAAAAAAAAAAAAAAAAAAPgADAP7...
Any other ideas?
----- UPDATE -----
To clarify, step by step what is happening. By the way, I am using C# MVC.
STEP 1 - Using the plugin jquery.filedrop.js, I drop the file on its view. Can be any file extension.
STEP 2 - Calls the plugin, which includes this code:
// Respond to an upload
function upload() {
stop_loop = false;
if (!files) {
opts.error(errors[0]);
return false;
}
var filesDone = 0,
filesRejected = 0;
if (files_count > opts.maxfiles && opts.queuefiles === 0) {
opts.error(errors[1]);
return false;
}
// Define queues to manage upload process
var workQueue = [];
var processingQueue = [];
var doneQueue = [];
// Add everything to the workQueue
for (var i = 0; i < files_count; i++) {
workQueue.push(i);
}
// Helper function to enable pause of processing to wait
// for in process queue to complete
var pause = function (timeout) {
setTimeout(process, timeout);
return;
}
// Process an upload, recursive
var process = function () {
var fileIndex;
if (stop_loop) return false;
// Check to see if are in queue mode
if (opts.queuefiles > 0 && processingQueue.length >= opts.queuefiles) {
return pause(opts.queuewait);
} else {
// Take first thing off work queue
fileIndex = workQueue[0];
workQueue.splice(0, 1);
// Add to processing queue
processingQueue.push(fileIndex);
}
try {
if (beforeEach(files[fileIndex]) != false) {
if (fileIndex === files_count) return;
var reader = new FileReader(),
max_file_size = 1048576 * opts.maxfilesize;
reader.index = fileIndex;
if (files[fileIndex].size > max_file_size) {
opts.error(errors[2], files[fileIndex], fileIndex);
// Remove from queue
processingQueue.forEach(function (value, key) {
if (value === fileIndex) processingQueue.splice(key, 1);
});
filesRejected++;
return true;
}
reader.onloadend = send;
//reader.readAsArrayBuffer(files[fileIndex]);
reader.readAsDataURL(files[fileIndex]);
//reader.readAsBinaryString(files[fileIndex]);
} else {
filesRejected++;
}
} catch (err) {
// Remove from queue
processingQueue.forEach(function (value, key) {
if (value === fileIndex) processingQueue.splice(key, 1);
});
opts.error(errors[0]);
return false;
}
// If we still have work to do,
if (workQueue.length > 0) {
process();
}
};
var send = function (e) {
var fileIndex = ((typeof (e.srcElement) === "undefined") ? e.target : e.srcElement).index
// Sometimes the index is not attached to the
// event object. Find it by size. Hack for sure.
if (e.target.index == undefined) {
e.target.index = getIndexBySize(e.total);
}
var xhr = new XMLHttpRequest(),
upload = xhr.upload,
file = files[e.target.index],
index = e.target.index,
start_time = new Date().getTime(),
boundary = '------multipartformboundary' + (new Date).getTime(),
builder;
newName = rename(file.name);
mime = file.type
if (typeof newName === "string") {
builder = getBuilder(newName, e.target.result, mime, boundary);
} else {
builder = getBuilder(file.name, e.target.result, mime, boundary);
}
upload.index = index;
upload.file = file;
upload.downloadStartTime = start_time;
upload.currentStart = start_time;
upload.currentProgress = 0;
upload.startData = 0;
upload.addEventListener("progress", progress, false);
xhr.open("POST", opts.url, true);
xhr.setRequestHeader('content-type', 'multipart/form-data; boundary=' + boundary);
// Add headers
$.each(opts.headers, function (k, v) {
xhr.setRequestHeader(k, v);
});
xhr.sendAsBinary(builder);
opts.uploadStarted(index, file, files_count);
xhr.onload = function () {
if (xhr.responseText) {
var now = new Date().getTime(),
timeDiff = now - start_time,
result = opts.uploadFinished(index, file, jQuery.parseJSON(xhr.responseText), timeDiff, xhr);
filesDone++;
// Remove from processing queue
processingQueue.forEach(function (value, key) {
if (value === fileIndex) processingQueue.splice(key, 1);
});
// Add to donequeue
doneQueue.push(fileIndex);
if (filesDone == files_count - filesRejected) {
afterAll();
}
if (result === false) stop_loop = true;
}
};
}
// Initiate the processing loop
process();
}
STEP 3 - The plugin return to the controller where I receive the file and try to save it:
[HttpPost]
public ActionResult UploadFiles(IEnumerable<HttpPostedFileBase> files)
{
byte[] binaryData;
binaryData = new Byte[file.InputStream.Length];
long bytesRead = file.InputStream.Read(binaryData, 0, (int)file.InputStream.Length);
file.InputStream.Close();
string base64String = System.Convert.ToBase64String(binaryData, 0, binaryData.Length);
byte[] bytes = System.Convert.FromBase64String(base64String);
//Salva arquivo físico em pasta provisória
string filePath = Path.Combine(ed_fisico_provisorio.vr_parametro, file.FileName);
System.IO.FileStream fs = System.IO.File.Create(filePath);
fs.Write(bytes, 0, bytes.Length);
fs.Close();
}
The content of the saved file is as said above.
Any help will be appreciated.
